2 sentences

1. 编辑正在校正文稿中的错别字。

   biān​jí zhèng​zài jiào​zhèng wén​gǎo zhōng de cuò​bié​zì.

   The editor is correcting typos in the manuscript.

   Source: Dong Chinese Dictionary

2. 在实验开始前，必须先对精密仪器进行校正。

   zài shí​yàn kāi​shǐ qián, bì​xū xiān duì jīng​mì yí​qì jìn​xíng jiào​zhèng.

   The precision instruments must be calibrated before the experiment begins.

   Source: Dong Chinese Dictionary